Slug magazine for extruding machines



F. J. LYNCH SLUG MAGAZINE FOR EXTRUDING MACHINES Jams 15, 1929.

Filed March 29, 1928 3 e INVENTOR U V EJTLynah/ BY Wm ATTORNEY WITNESSESPatented Jan. 15, 1929.

UNITED STATES 1,699,504 PATENT OFFICE.

FRANK J. LYNCH, OF HILLSIDE, NEW JERSEY, ASSIGNOR TO THE SUN TUBECORPORA- TION, OF HILLSIDE, NEW JERSEY, A CORPORATION NEW JERSEY.

SLUG MAGAZINE FOR EXTRUDING MACHINES.

Application filed March 29, 1928. Serial No. 265,686.

This invention relates to magazines for slugs, and particularly to aslug magazine associatcd with an extruding machine, the'object being toprovide a construction whereby sin gs are accurately positioned to beregularly fed into the extruding machine.

Another object of the invention is to pro vide a slug magazine whereinthe slugs are resiliently clamped in position when not being fed to theextruding machine.

A still further object of the invention is to provide a slug magazinewith a resilient clamping pin acting to hold the Slugs in properposition for dispensing and at the same time acting as a stop forpreventing slugs from entering the magazine in an improper manner.

. In the accompanying drawing Figure 1 is a longitudinal verticalsectional view thorugh a magazine and associated parts disclosing anembodiment of the invention, the same being shown in connection withpart of an extruding machine;

Figure 2 is a view similar to Figure 1 but showing the parts in adifferent position;

Figure 3 is a fragmentary top plan view of a slug-feedingclamp.

In feeding slugs to extruding machines used in making collapsible tubes,it has been customary heretofore to provide a magazine at a distantpoint and to cause slugs to move from the magazine into a chute andthence down to a feeding or gripping structure which places theindividual slugs correctly in the extruding machine. As the structurewas made heretofore a more or less continuous feed of slugs was providedand consequently sometimes the slugs would get out of line or out ofplace. and would not be properly fed to the extruding machine. Thiswould naturally result in stopping of the machine and loss of time inresetting the parts. In the present invention a slug magazine has beenprovided which causes a proper and accurate feeding of slugs to theextruding machine. As shown in the drawing, 1 indicates the magazinewhich is supported by any suitable support 2 and which is supplied withslugs 3 from the chute 4. Chute 4 may be fed with slugs'from a reservemagazine or in any desired manner. As the slugs move downwardlypreferably under the action of gravity they will pass into thepassageway-5 and eventually through the slot or cut 6 into the upperpart of the magazine 1. The slugs are in a substantially horizontalposition when entering the magazine 1. Preferably the magazine issubstantially filled as shown in Figure 1 before the extruding machineis started. The extruding machine includes a plunger 7 and a pair offeeding grips 8 which operate in proper time with the plunger 7. Thegrip 8 is provided With gripping jaws 8 which separate after depositinga slug in the die 9 and then move back in a separated condition untilthe jaws are opposite the bottom of the magazine 1. The magazine 1 issupported so that the lower end will be slightly further from the topsurface of plate 10 than the thickness of the slug, whereby the jaws 8may close on a slug and push the same over to the die 9 with parts ofthe clamp 8 sliding beneath the magazine. As soon as the clamp 8 hasreturned until the jaws 8 are on opposite sides of the magazine, thevarious slugs in the magazine are permitted to drop downwardly and thelowermost slug will naturally be substantially within the jaws so that,when the clamp 8 closes and moves forwardly again, it will grip thelowermost slug and move the same to the die 9. This action is continuedas long as the machine is in operation. As this takes place slugs aremoving down a chute 4 and entering the magazine through slot 6. If thetopmost slug is in the position shown in Figures 1 and 2 when theplunger 7 moves downwardly, it is held in this position by a pin 11which presses against the top slug which in turn places the remainingslugs in the magazine under slight pressure. Pin 11 is slidably mountedin the tubular casing 12 held rigidly by the bracket 18, which bracketis secured in any desired manner to the part 14 which moves with plunger7. The pin 11 is formed with a reduced section 15 extending upwardlythrough the upper end of casing 12, so that the pin 16 may be inserted.In order to prevent 11 from accidently moving out of casing 12 a spring17 is arranged in casing 12 and surrounds reduced portion 15 so as toact on the shoulder 18 for resiliently holding the pin in its loweredposition. Each time the plunger 7 moves downwardly for producing anextrusion of a slug in die 9, pin 11 will also move downwardly andresiliently tap or press the topmost slug in magazine 1. In this mannerthe slugs in the magazine are always maintained in a proper position tobe grasped by the clamping member 8. Also, by this arrangement offeeding the magazine none of the slugs can ossibly get out of place orcause an improper eeding to the extruding machine.

What I claim is 1. A. slug magazine for an extruding ma- 1 chine,comprising a tubular member open at both ends, means for supporting thetubular chines, comprising a tubular container, means for directingslugs into said container, said container'having an opening at thebottom for the discharge of slugs from the container and aspring-pressed p111 carried by the extruding machine movable into andout of the container for resiliently tapping the slugs in the container.

3. A slug magazine for extruding machines, comprising a tubularcontainer, means for supporting said container so that the space beneaththe bottom will be slightly more than the thickness of a slug to be carried by the magazine, means for directing slugs into said container atthe top thereof, and means carried by the extruding machine movable intoand out-0f the container for resiliently tapping the slugs in thecontainer at spaced intervals.

4. The combination with an extruding machine of a slug magazine arrangedadjacent the extruding plunger of the extruding machine, saidmagazine-being supported so that there will bea space therebeneathslightly greater than the thickness of the slu whereby the feeding clampof the extru ing machine may 'feed slugs from beneath the magazine,means for directing a supply ofslugs to the magazine adjacent the topthereof; said means acting to arrange the slugs in a horizontalplane asthey enter the magazine, and means carried by the extruding machinemovable into and out of the magazine acting simultaneouslywith theplunger of the extruding machinefor resiliently tapping the pile ofslugs in the magazine to prevent the slugs from becoming clogged. 4

'5; The combination with an extruding machine of a slug magazinepresenting a vertically disposed tubular container of a size to looselyreceive a stack of slugs, means for directing slugs horizontally intosaid magazine'adjacent the top, said magazine being positioned to feedone slug at a time from the bottom, and spring cushioned means movinginto and out of the magazine actuated by the extruding machine fortapping the stack of slugs in the magazine.

6. 'A slug magazine for an extruding machine, comprising a verticallydisposed tubular member havlngaslot near the top, means for supportingthe tubular member so as to leave a space therebeneath slightly greaterthan the thickness of a slug, a chute for directing slugs horizontallythrough said slots into said tubular member, and means moving March, A.D. 1928.

' FRANK J. LYNCH.

